1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90c3d4b9ebc531df8c86faf82d92e07b609739e18aa0d205e54bc2a3d5d3ebe. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16543a93-a92f-4722-9f3a-48318fe68d04.json and https://artists.proofprofile.net/proofs/artist/16543a93-a92f-4722-9f3a-48318fe68d04.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc356b1b0b99765cfd24d4b0be2f9deff41b61975425821a25708d029ddadee74. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBE71100147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea49a01273a273d6acdfce223f9cf6bd1c1df92a841c8dbd1bd64655c6ce8d38. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCPZ1206164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc319c60015bc790f33bb4c24ddbe62a502c8ad07692a330d461c3348c2b7151. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCPZ1206532.
Defected In The House Miami 2013 Mixtape
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a41d520962308ca149d00f194c15aab35bd63dab060103f2dea49961db4571e. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBK5G1000268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2fdedee4efd96031ed5a08cc9f4cc7aed4262a650d74d4a90e54612aa37e3d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES94G1813803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19555522ad7d91f88a15eaa31e9108b0b7ad816d8248ebc2c20ac126980dc501. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITKG02000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d5d6e0da36e82339510ead70c16ab6a0fed24f496bf91bf15ea13a787b2479. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITKG02000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9167db7aefeaf0485ce8c47b9dbd3706db9e38340c3138af129664626f9d5363. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBJAJ2100571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6108e52095acbea597d1246a272827cd24c9eaf55e5c718fb25f46375b793f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEM932100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9f844bdabe2a92842eb74300110de6364fc5bc859548f29cf34c9fe7f23aab. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBJAJ2200676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa719e441c06360972efd7064cb290526967b577e72b5bcf30f944ee480151947. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITKG02200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fa75851fcc3e6f6bf2eaba7db9e8ab7c32308a82ee492ef746ec44213c388c. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITKG02200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1912108f0aaec5d1772084604af5cdae89645e270564ababd75d379ede09d96d. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITKG02200098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f94af8f65244f0be10d34d9cdaa40a88b67c4a8173d3747ae8246c5edb2e120. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITKG02200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b54cd1e4df49ad17f7820f28018eac982584e87092d4b571cc8652c80a6b98. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB9UU2300010.
I Gave You the World (Milk & Sugar Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb088a5e211b2e0aac156e3d234a4aa9f9df7da15bec27b0bd650376fce0f8d3e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCPZ2322110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da03a4d1f8dfe69d175e217cf39a41f29db5df66e70e80e86b0936201bc8c2c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSCL2300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88507d9afde166c44622fb80a0ef294d287b25bea2200239c31d024afa669fbc. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCPZ2322601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f596ad6e650df27d52b05dc593a3e0359d7176f0900e01ac16bc559788f135d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITKG02400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efd2eb833b5b707dbef4e09337211f78ed2e4816c967532ba45604627b46e53. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBJAJ2400725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65052bb97d4996c8de7f3e19d6f6b5b9b9d38ac8a4c10ee14f32e1cbdeba1052. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBJAJ2400724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37ca22db20ce9a67b3ff7f9051d7a5148d94e6788a306d9359fa0131970c334. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBJAJ2400973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398cc7039f87cedc3793c3d2f84d2d0fcf642f6057ca14f1e6b83e7d475ec672. Chain 2 (Bitcoin): anchored in block 960165 (2026-07-29T23:29:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITKG02400236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd687268db326a5c0e4d7aa264f028f2289a93ad07169701f962dfd72d25c9521. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKU332400437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78994418700d05a74961d6f6925f715310273a2ffb3370add8c46bc5ca68e421. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITKG02500317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efd2eb833b5b707dbef4e09337211f78ed2e4816c967532ba45604627b46e53. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBJAJ2400725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e15874d8da4dca163efd53cdc2a933e271ccb7970be82995842713d58168c1. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB9UU2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd161d1329f94ed87e059aa9b16ae41a010562aef652540d26927b658a93bae20. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S1515440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed05e416c26818957be78c8c3450938a9b02e160ca6a6007fc3ee3bfc5aeaee. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITKG01900171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa594299d36238bdf9fb1832fd58234459a393c44a0eb24ef24b4c60d39c8ae08. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITKG01900172.